It has a light gray head with X symbols and 4 eyes. Its body has 6 arms with Xs on them. They have air sacks with Xs on them and have 6 legs with Xs on them.
It is lighter than air so you can't hear it walking. Its airs sacks are there to produce air so it doesn't breathe. You need a device with 42 loudspeakers, 42 megaphones, and 42 microphones to hear it.
- Its name is the word soundless meaning without sound.